Water Quality in San Jose, CA (95973)
EPA violation data for public water systems serving ZIP code 95973.
Active Health Violations
2 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 72% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
39,031
Population
15
Water Systems
13
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (15)
Cal-Water Service Co.-Chico
South Feather W&P - Miners Ranch
Chico Grange #486
All resolvedPleasant Valley Baptist Church
2 health-basedBidwell Park Golf Course
All resolvedNord Country School
Keefer Creek Estates
Youth With A Mission-Springs Of Living W
G & J Properties
All resolvedDown Range Indoor Training Center
All resolvedPilot Travel Center #168 - Water
California Olive Ranch
North Valley School Pws
Scotty 'S Waterfront Gardens
Westend Water Association
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Similar to nitrate — harmful to infants at high levels.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Jose (95973) has more violations than 72% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 13.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.